First off, let me get this out of the way right up front: This is not the 'fall dashboard update.'

Today the team is releasing a minor system update via Xbox Live. Over the next few hours, when you sign in to Xbox LIVE, you'll receive a prompt to accept this mandatory update. What's in this update? Much like the update last month, the only thing this minor release will do is prepare your Xbox 360 for the Big Button Pad that is being released this holiday. Why do we need to release this update now? Simple: The certification team needs time to test the new controller against the retail hardware/software combination before it hits stores.

One more thing: no new features beyond this big button pad support are included in this update and, once again, this is not the 'fall dashboard upgrade.' When I have firm details on the next major update, I will share them.

If you plan to run the 'Timing Attack' to downgrade your kernel or have an iXtreme DVD firmware I suggest you do NOT update for now until people analyzed the new update. A small update just before a major Halo release brings up memories
The new dash/kernel version is 5787.